DOCSLIB.ORG

Identification Guide to SHARKS of Mississippi

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Identification Guide to SHARKS of Mississippi Identification Guide to SHARKS of Mississippi By Dr. Eric Hoffmayer, Jim Franks and John Shelley The University of Southern Mississippi Gulf Coast Research Laboratory Center for Fisheries Research and Development The development of this guide was made possible by the Mississippi Department of Marine Resources and the U.S. Fish and Wildlife Service, Federal Aid in Sport Fish Restoration Program. SHARKS PRESENTED IN THIS GUIDE PREFACE This guide was developed to assist anglers, particularly similar species that are easily confused. Bonnethead .......................................... Sphyrna tiburo Dusky shark ...............................Carcharhinus obscurus charter boat captains, marine enforcement officers, It is the intent of the authors that this user-friendly biologists, commercial fishers and others in the guide serve as a useful field identification aid as well Scalloped hammerhead........................ Sphyrna lewini Silky shark ..............................Carcharhinus falciformis identification of sharks that occur in or near the as a source of general information on local sharks. Great hammerhead........................... Sphyrna mokarran Atlantic sharpnose shark .. Rhizoprionodon terraenovae coastal and marine waters of Mississippi. Species Considering the overfished status of numerous included in the guide were selected based on their shark populations, individuals who catch sharks, Tiger shark ........................................ Galeocerdo cuvier Blacknose shark ....................... Carcharhinus acronotus relative occurrence and probability of encounter particularly female sharks during pupping season, within Mississippi’s inshore (north of the barrier might choose to release them unharmed once they Lemon shark ............................... Negaprion brevirostris Finetooth shark ............................Carcharhinus isodon islands) and offshore (south of the barrier islands) are identified by quick reference to this guide. It is waters. anticipated that the guide represents the initial step Bull shark ..................................... Carcharhinus leucas Spinner shark .........................Carcharhinus brevipinna The guide provides a shark illustration which in the development of an angler-based, cooperative highlights external anatomical features used to tagging program for sharks in Mississippi waters. Shortfin mako ...................................Isurus oxyrinchus Blacktip shark .......................... Carcharhinus limbatus identify the various species. An identification This guide was developed with a grant from Sandbar shark .......................... Carcharhinus plumbeus “key,” photographs, descriptions of unique physical the Mississippi Department of Marine Resources characteristics, and general information for each and the U.S. Fish and Wildlife Service, Sport Fish species assist users in correctly identifying the sharks, Restoration Program. Page 1 Page 2 GENERAL REPRODUCTIVE INFORMATION ON SHARKS IN THIS GUIDE Common Name Female Size at Litter Size** Size at Birth Pupping REFERENCE POINTS FOR TERMS IN GUIDE Maturity (feet)** (inches)** Season Small Coastal Species Interdor- Atlantic sharpnose 3 1 – 7 13 – 15 May/June 1st Dorsal Fin sal Ridge 2nd Dor- Finetooth 4 – 5 1 – 6 18 – 20 May/June Bonnethead 3 1 – 16 14 – 16 Aug/Sept 1st Dorsal Fin Origin sal Fin Blacknose 3 – 4 3 – 6 15 – 20 May/June Free Rear Tip Large Coastal Species Blacktip 5 – 6 1 – 10 18 – 23 May/June Spinner 6 – 7 3 – 15 24 – 30 May/June Bull 7 – 8 1 – 15 22 – 32 May/June Sandbar 5 – 6 1 – 14 22 – 30 May/June Silky 7 – 8 2 – 14 28 – 34 May/June Caudal Fin Dusky * 9 – 10 3 – 14 27 – 39 May/June Tiger 11 – 12 10 – 82 20 – 30 May/June Caudal Keel Lemon 7 – 8 4 – 17 24 – 26 May/Aug Snout Anal Fin Claspers Scalloped hammerhead 7 – 8 15 – 31 17 – 22 May/June (males Pelvic Fin Great hammerhead 9 – 10 13 – 42 20 – 28 Aug/Sept Pectoral Fin only) Pelagic Species Rear Margin Shortfin mako 9 – 10 8 – 10 24 – 27 Unknown Illustration by Joe Jewell Shark Management Category * Prohibited Species ** Source: J.D. McEachran and J.D. Fechhelm. 1998. Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to Sharks are managed by state and federal regulations. Gasterosteiformes. University of Texas Press, Austin, 1112 pp. Page 3 Page 4 IDENTIFICATION KEY TO THE SHARKS OF MISSISSIPPI This key contains a series of paired descriptive options (1-14) to use in the identification of sharks. Beginning with #1, select the option (a or b) b) Top lobe of caudal fin longer than bottom lobe; no caudal keel .......................................................................................8 that best applies to your specimen. The number shown at the end of your chosen option will guide you through the key to the next pair of options you must consider. Continue this stepwise process until you identify the correct name of your shark. 8. a) Interdorsal ridge present .....................................................................................................................................................9 b) Interdorsal ridge absent .....................................................................................................................................................11 1. a) Head shovel or hammer shaped ..........................................................................................................................................2 9. a) 1st dorsal fin high, triangular, and originates over middle of pectoral fin ....................................................... Sandbar (p.21) b) Head rounded to pointed ...................................................................................................................................................4 b) 1st dorsal fin moderately rounded and originates over or well behind rear margin of pectoral fin ................................10 2. a) Head shovel shaped with no center indention ........................................................................................ Bonnethead (p.7) 10. a) 1st dorsal fin originates over rear margin of pectoral fin; pectoral fin with slightly curved rear margin ........ Dusky (p.23) b) Head hammer shaped with center indention .....................................................................................................................3 b) 1st dorsal fin originates well behind rear margin of pectoral fin; 2nd dorsal fin has long free tip ....................Silky (p.25) 3. a) Front margin of head broadly arched with center indention and two shallow notches on 11. a) Origin of 2nd dorsal fin about middle of anal fin base; white spots on dorsal surface of individuals each side; pelvic fins with straight rear margin ......................................................................Scalloped hammerhead (p.9) greater than 23” total length ........................................................................................................Atlantic sharpnose (p.27) b) Front margin of head nearly straight with center indention and one shallow notch on each b) Origin of 2nd dorsal fin aligns with origin of anal fin; white spots absent on dorsal surface .........................................12 side; pelvic fins with curved rear margin ....................................................................................Great hammerhead (p.11) 12. a) Snout with dusky blotch at tip ...................................................................................................................Blacknose (p.29) 4. a) Snout short and bluntly rounded .......................................................................................................................................5 b) Snout without dusky blotch at tip .....................................................................................................................................13 b) Snout elongated and moderately rounded to pointed .......................................................................................................7 13. a) Fins not black tipped; 1st dorsal fin originates over rear margin of pectoral fin; body bluish gray .............Finetooth (p.31) 5. a) Black spots or stripes on dorsal surface; teeth serrated and deeply notched ..................................................... Tiger (p.13) b) All or most of the fins black tipped ...................................................................................................................................14 b) Body uniform in color; teeth not deeply notched ..............................................................................................................6 14. a) 1st dorsal fin originates behind rear margin of pectoral fin; all fins black tipped; snout longer than 6. a) 1st and 2nd dorsal fins approximately equal in size; body yellowish-green to brown in color ...................... Lemon (p.15) mouth width ...................................................................................................................................................Spinner (p.33) b) 1st dorsal fin much larger than 2nd dorsal fin; 1st dorsal fin high, triangular, and originates over middle b) 1st dorsal fin originates over pectoral fin, sometimes over the rear margin; all fins black tipped except of pectoral fin; body robust and dark gray in color ............................................................................................ Bull (p.17) anal fin; snout shorter than mouth width ....................................................................................................Blacktip
Load more

Recommended publications
  • NOAA Technical Memorandum NMFS-SEFSC-626
    NOAA Technical Memorandum NMFS-SEFSC-626 RELATIVE ABUNDANCE OF SMALLTOOTH SAWFISH (Pristis pectinata) BASED ON THE EVERGLADES NATIONAL PARK CREEL SURVEY BY JOHN K. CARLSON and JASON OSBORNE U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Marine Fisheries Service Southeast Fisheries Science Center Panama City Laboratory 3500 Delwood Beach Rd. Panama City, FL 32408 February 2012 NOAA Technical Memorandum NMFS-SEFSC-626 RELATIVE ABUNDANCE OF SMALLTOOTH SAWFISH (Pristis pectinata) BASED ON THE EVERGLADES NATIONAL PARK CREEL SURVEY BY JOHN K. CARLSONa, and JASON OSBORNEb aNational Marine Fisheries Service Southeast Fisheries Science Center 3500 Delwood Beach Road Panama City, FL 32408 bNational Park Service South Florida Natural Resource Center 40001 State Road 9336 Homestead, FL, 33034 U. S. DEPARTMENT OF COMMERCE Rebecca M. Blank, Acting Secretary NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION Jane Lubchenco, Under Secretary for Oceans and Atmosphere NATIONAL MARINE FISHERIES SERVICE Eric Schwaab, Assistant Administrator for Fisheries February 2012 This Technical Memorandum series is used for documentation and timely communication of preliminary results, interim reports, or similar special-purpose information. Although the memoranda are not subject to complete formal review, editorial control, or detailed editing, they are expected to reflect sound professional work. NOTICE The National Marine Fisheries Service (NMFS) does not approve, recommend or endorse any proprietary product or material mentioned in this publication. No reference shall be made to NMFS or to this publication furnished by NMFS in any advertising or sales promotion which would imply that NMFS approves, recommends, or endorses any proprietary product or proprietary material mentioned herein which has as its purpose any intent to cause directly or indirectly the advertised product to be used or purchased because of this NMFS publication.
    [Show full text]
  • Insights Into Insular Isolation of the Bull Shark, Carcharhinus Leucas (Müller and Henle, 1839), in Fijian Waters
    Nova Southeastern University NSUWorks Biology Faculty Articles Department of Biological Sciences 12-14-2020 Insights Into Insular Isolation of the Bull Shark, Carcharhinus leucas (Müller and Henle, 1839), in Fijian Waters Kerstin B J Glaus Sharon A. Appleyard Brian Stockwell Juerg M. Brunnschweiler Mahmood S. Shivji See next page for additional authors Follow this and additional works at: https://nsuworks.nova.edu/cnso_bio_facarticles Part of the Biology Commons Authors Kerstin B J Glaus, Sharon A. Appleyard, Brian Stockwell, Juerg M. Brunnschweiler, Mahmood S. Shivji, Eric Clua, Amandine D. Marie, and Ciro Rico fmars-07-586015 December 14, 2020 Time: 11:37 # 1 ORIGINAL RESEARCH published: 14 December 2020 doi: 10.3389/fmars.2020.586015 Insights Into Insular Isolation of the Bull Shark, Carcharhinus leucas (Müller and Henle, 1839), in Fijian Waters Kerstin B. J. Glaus1*, Sharon A. Appleyard2†, Brian Stockwell1†, Juerg M. Brunnschweiler3, Mahmood Shivji4, Eric Clua5, Amandine D. Marie1,6 and Ciro Rico1,7 1 School of Marine Studies, Faculty of Science, Technology and Environment, The University of the South Pacific, Suva, Fiji, 2 CSIRO National Research Collections Australia, Australian National Fish Collection, Hobart, TAS, Australia, 3 Independent Researcher, Zurich, Switzerland, 4 Save Our Seas Foundation Shark Research Center, Nova Southeastern University, Fort Lauderdale, FL, United States, 5 PSL Research University, Labex CORAIL, CRIOBE USR 3278 CNRS-EPHE-UPVD, Université de Perpignan, Perpignan, France, 6 ESE, Ecology and Ecosystems Health, Agrocampus Ouest, INRAE, Rennes, France, 7 Instituto de Ciencias Marinas de Andalucía (ICMAN), Consejo Superior de Investigaciones Científicas, Puerto Real, Edited by: Spain Lorenzo Zane, University of Padua, Italy Reviewed by: The bull shark (Carcharhinus leucas) is a large, mobile, circumglobally distributed Ka Yan Ma, high trophic level predator that inhabits a variety of remote islands and continental Sun Yat-sen University, China Simo Njabulo Maduna, coastal habitats, including freshwater environments.
    [Show full text]
  • Status and Demographic Analysis of the Dusky Shark, Carcharhinus Obscurus, in the Northwest Atlantic
    W&M ScholarWorks Dissertations, Theses, and Masters Projects Theses, Dissertations, & Master Projects 2004 Status and Demographic Analysis of the Dusky Shark, Carcharhinus obscurus, in the Northwest Atlantic Jason G. Romine College of William and Mary - Virginia Institute of Marine Science Follow this and additional works at: https://scholarworks.wm.edu/etd Part of the Biostatistics Commons, Fresh Water Studies Commons, and the Oceanography Commons Recommended Citation Romine, Jason G., "Status and Demographic Analysis of the Dusky Shark, Carcharhinus obscurus, in the Northwest Atlantic" (2004). Dissertations, Theses, and Masters Projects. Paper 1539617821. https://dx.doi.org/doi:10.25773/v5-zm7f-h314 This Thesis is brought to you for free and open access by the Theses, Dissertations, & Master Projects at W&M ScholarWorks. It has been accepted for inclusion in Dissertations, Theses, and Masters Projects by an authorized administrator of W&M ScholarWorks. For more information, please contact [email protected]. Status and demographic analysis of the Dusky shark, Carcharhinus obscurus, in the Northwest Atlantic A Thesis Presented to The Faculty of the School of Marine Science The College of William and Mary in Virginia In Partial fulfillment Of the Requirements for the Degree of Master of Science by Jason G. Romine 2004 APPROVAL SHEET This thesis is submitted in partial fulfillment of The requirements for the degree of Master of Science Jason G. KOmine Approved, August 2004 NloW A. Musick, Ph.D. Committee Chairman/Advisor Kim N. Holland, Ph.D Hawaii Institute of Marine Biology University of Hawaii Kaneohe, Hawaii onn E. Olney, Ph.D. TABLE OF CONTENTS ACKNOWLEDGEMENTS........................................................................................................ v LIST OF TABLES........................................................................................................................vi LIST OF FIGURES...................................................................................................................
    [Show full text]
  • First Evidence of Multiple Paternity in the Bull Shark (Carcharhinus Leucas) Agathe Pirog, Sébastien Jaquemet, Marc Soria, Hélène Magalon
    First evidence of multiple paternity in the bull shark (Carcharhinus leucas) Agathe Pirog, Sébastien Jaquemet, Marc Soria, Hélène Magalon To cite this version: Agathe Pirog, Sébastien Jaquemet, Marc Soria, Hélène Magalon. First evidence of multiple paternity in the bull shark (Carcharhinus leucas). Marine and Freshwater Research, CSIRO Publishing, 2015, 10.1071/mf15255. hal-01253775 HAL Id: hal-01253775 https://hal.archives-ouvertes.fr/hal-01253775 Submitted on 4 May 2016 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. First evidence of multiple paternity in the bull shark (Carcharhinus leucas) Agathe PirogA, Se´bastien JaquemetA,B, Marc SoriaC and He´le`ne MagalonA,B,D AUniversite´ de La Re´union, UMR 9220 ENTROPIE (Universite´ de La Re´union/IRD/CNRS), 15 Avenue Rene´ Cassin, CS 92003, F-97744 Saint Denis Cedex 09, La Re´union, France. BLaboratory of Excellence CORAIL, 58, Avenue Paul Alduy, F-66860 Perpignan Cedex, France. CIRD Re´union, UMR 248 MARBEC, CS 41095 2 rue Joseph Wetzell, F-97492 Sainte-Clotilde, La Re´union, France. DCorresponding author. Email: [email protected] Abstract. The present study assessed the occurrence of multiple paternity in four litters of bull shark Carcharhinus leucas (n ¼ 5, 8, 9 and 11 embryos) sampled at Reunion Island in the Western Indian Ocean.
    [Show full text]
  • First Records of the Sicklefin Lemon Shark, Negaprion Acutidens, at Palmyra Atoll, Central Pacific
    Marine Biodiversity Records, page 1 of 3. # Marine Biological Association of the United Kingdom, 2014 doi:10.1017/S175526721400116X; Vol. 7; e114; 2014 Published online First records of the sicklefin lemon shark, Negaprion acutidens, at Palmyra Atoll, central Pacific: a recent colonization event? yannis p. papastamatiou1, chelsea l. wood2, darcy bradley3, douglas j. mccauley4, amanda l. pollock5 and jennifer e. caselle6 1School of Biology, Scottish Oceans Institute, University of St Andrews, St Andrews, KY16 8LB, UK, 2Department of Ecology and Evolutionary Biology, University of Michigan, Michigan 48109, USA, 3Bren School of Environmental Science and Management, University of California Santa Barbara, CA 93106, USA, 4Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, CA 93106, USA, 5US Fish and Wildlife Service, Hawaii, 96850, USA, 6Marine Science Institute, University of California Santa Barbara, CA 93106, USA The range of the sicklefin lemon shark (Negaprion acutidens) is expanded to include Palmyra Atoll, in the Northern Line Islands, central Pacific. Despite the fact that researchers have been studying reef and lagoon flat habitats of the Atoll since 2003, lemon sharks were first observed in 2010, suggesting a recent colonization event. To date, only juveniles and sub-adult sharks have been observed. Keywords: competition, Line Islands, range expansion, sharks Submitted 15 August 2014; accepted 23 September 2014 INTRODUCTION MATERIALS AND METHODS Shark reproduction does not involve a larval stage, so dispersal Study site can occur only through swimming of neonate, juvenile, or adult individuals from one location to another (Heupel Observations were made at Palmyra Atoll (5854′N 162805′W), et al., 2010; Lope˙z-Garro et al., 2012; Whitney et al., 2012).
    [Show full text]
  • Investigating Life History Differences Between Finetooth Sharks, Carcharhinus Isodon, in the Northern Gulf of Mexico and the Western North Atlantic Ocean
    Gulf of Mexico Science, 2006(1/2), pp. 2–10 Investigating Life History Differences Between Finetooth Sharks, Carcharhinus isodon, in the Northern Gulf of Mexico and the Western North Atlantic Ocean J. MARCUS DRYMON,WILLIAM B. DRIGGERS III, DOUGLAS OAKLEY, AND GLENN F. ULRICH The life history of the finetooth shark, Carcharhinus isodon, off South Carolina was studied by determining age, growth, and size and age at maturity. These data were compared to a recent study describing the same parameters for finetooth sharks in the northern Gulf of Mexico. Cervical vertebrae were extracted from 168 specimens (71 males and 97 females), ranging in size from 376 to 1,262 mm fork length (FL), and prepared for age analysis using standard techniques. Sex- specific von Bertalanffy growth models were generated and yielded the following ؍ ((Ϫ Ϫ0.19(t Ϫ (Ϫ2.17 ؍ growth equations: Lt 1,311 mm FL (1 e ) for females and Lt 1,151 mm FL (1 Ϫ eϪ0.33(t Ϫ (Ϫ1.43))) for males. The oldest female and male aged were 12.4 yr and 10.4 yr, respectively. Median length where 50% of the population was mature was 1,021 mm FL for females, corresponding to an age of 6.3 yr and 1,015 mm FL for males, corresponding to an age of 5.0 yr. Finetooth sharks in the western North Atlantic Ocean had higher observed ages and there was a sig- nificant difference in size at age between neonate finetooth sharks in the western North Atlantic Ocean and the northern Gulf of Mexico; however, there were no significant differences among von Bertalanffy growth function parameters be- tween regions examined.
    [Show full text]
  • Reproductive Biology of the Bonnethead (Sphyrna Tiburo) from the Southeastern U.S
    University of North Florida UNF Digital Commons UNF Graduate Theses and Dissertations Student Scholarship 2014 Reproductive Biology of the Bonnethead (Sphyrna tiburo) from the Southeastern U.S. Atlantic Coast Melissa I. Gonzalez De Acevedo University of North Florida, [email protected] Follow this and additional works at: https://digitalcommons.unf.edu/etd Part of the Biology Commons, and the Ecology and Evolutionary Biology Commons Suggested Citation Gonzalez De Acevedo, Melissa I., "Reproductive Biology of the Bonnethead (Sphyrna tiburo) from the Southeastern U.S. Atlantic Coast" (2014). UNF Graduate Theses and Dissertations. 534. https://digitalcommons.unf.edu/etd/534 This Master's Thesis is brought to you for free and open access by the Student Scholarship at UNF Digital Commons. It has been accepted for inclusion in UNF Graduate Theses and Dissertations by an authorized administrator of UNF Digital Commons. For more information, please contact Digital Projects. © 2014 All Rights Reserved REPRODUCTIVE BIOLOGY OF THE BONNETHEAD (SPHYRNA TIBURO) FROM THE SOUTHEASTERN U.S. ATLANTIC COAST by Melissa Gonzalez De Acevedo A thesis submitted to the Department of Biology in partial fulfillment of the requirements for the degree of Masters of Science in Biology UNIVERSITY OF NORTH FLORIDA COLLEGE OF ARTS AND SCIENCES December 2014 Unpublished work, © Melissa Gonzalez De Acevedo CERTIFICATE OF APPROVAL The thesis “Reproductive biology of the bonnethead (Sphyrna tiburo) from the southeastern U.S. Atlantic coast” submitted by Melissa Gonzalez De Acevedo Approved by the thesis committee: Date Dr. Jim Gelsleichter Committee Chair Dr. Carolyn Belcher Dr. Eric Johnson Accepted for the Department of Biology: Dr. Cliff Ross Assistant Chair Accepted for the College of Arts and Sciences: Dr.
    [Show full text]
  • Social Learning in Juvenile Lemon Sharks, Negaprion Brevirostris
    WellBeing International WBI Studies Repository 1-2013 Social Learning in Juvenile Lemon Sharks, Negaprion brevirostris Tristan L. Guttridge University of Leeds Sander van Dijk University of Groningen Eize Stamhuis University of Groningen Jens Krause Leibniz-Institute of Freshwater Ecology and Inland Fisheries Samuel Gruber Rosenstiel School of Marine and Atmospheric Science See next page for additional authors Follow this and additional works at: https://www.wellbeingintlstudiesrepository.org/acwp_asie Part of the Animal Studies Commons, Comparative Psychology Commons, and the Other Animal Sciences Commons Recommended Citation Guttridge, T. L., van Dijk, S., Stamhuis, E. J., Krause, J., Gruber, S. H., & Brown, C. (2013). Social learning in juvenile lemon sharks, Negaprion brevirostris. Animal cognition, 16(1), 55-64. This material is brought to you for free and open access by WellBeing International. It has been accepted for inclusion by an authorized administrator of the WBI Studies Repository. For more information, please contact [email protected]. Authors Tristan L. Guttridge, Sander van Dijk, Eize Stamhuis, Jens Krause, Samuel Gruber, and Culum Brown This article is available at WBI Studies Repository: https://www.wellbeingintlstudiesrepository.org/acwp_asie/86 Social learning in juvenile lemon sharks, Negaprion brevirostris Tristan L. Guttridge1,5, Sander van Dijk2, Eize J. Stamhuis2, Jens Krause3, Samuel H. Gruber4, Culum Brown5 1 University of Leeds 2 University of Groningen 3 Leibniz-Institute of Freshwater Ecology and Inland Fisheries 4 Rosenstiel School of Marine and Atmospheric Science 5 Macquarie University KEYWORDS local and stimulus enhancement, group living, social facilitation, social information use, Elasmobranchs ABSTRACT Social learning is taxonomically widespread and can provide distinct behavioural advantages, such as in finding food or avoiding predators more efficiently.
    [Show full text]
  • © Iccat, 2007
    A5 By-catch Species APPENDIX 5: BY-CATCH SPECIES A.5 By-catch species By-catch is the unintentional/incidental capture of non-target species during fishing operations. Different types of fisheries have different types and levels of by-catch, depending on the gear used, the time, area and depth fished, etc. Article IV of the Convention states: "the Commission shall be responsible for the study of the population of tuna and tuna-like fishes (the Scombriformes with the exception of Trichiuridae and Gempylidae and the genus Scomber) and such other species of fishes exploited in tuna fishing in the Convention area as are not under investigation by another international fishery organization". The following is a list of by-catch species recorded as being ever caught by any major tuna fishery in the Atlantic/Mediterranean. Note that the lists are qualitative and are not indicative of quantity or mortality. Thus, the presence of a species in the lists does not imply that it is caught in significant quantities, or that individuals that are caught necessarily die. Skates and rays Scientific names Common name Code LL GILL PS BB HARP TRAP OTHER Dasyatis centroura Roughtail stingray RDC X Dasyatis violacea Pelagic stingray PLS X X X X Manta birostris Manta ray RMB X X X Mobula hypostoma RMH X Mobula lucasana X Mobula mobular Devil ray RMM X X X X X Myliobatis aquila Common eagle ray MYL X X Pteuromylaeus bovinus Bull ray MPO X X Raja fullonica Shagreen ray RJF X Raja straeleni Spotted skate RFL X Rhinoptera spp Cownose ray X Torpedo nobiliana Torpedo
    [Show full text]
  • Florida's Fintastic Sharks and Rays Lesson and Activity Packet
    Florida's Fintastic Sharks and Rays An at-home lesson for grades 3-5 Produced by: This educational workbook was produced through the support of the Indian River Lagoon National Estuary Program. 1 What are sharks and rays? Believe it or not, they’re a type of fish! When you think “fish,” you probably picture a trout or tuna, but fishes come in all shapes and sizes. All fishes share the following key characteristics that classify them into this group: Fishes have the simplest of vertebrate hearts with only two chambers- one atrium and one ventricle. The spine in a fish runs down the middle of its back just like ours, making fish vertebrates. All fishes have skeletons, but not all fish skeletons are made out of bones. Some fishes have skeletons made out of cartilage, just like your nose and ears. Fishes are cold-blooded. Cold-blooded animals use their environment to warm up or cool down. Fins help fish swim. Fins come in pairs, like pectoral and pelvic fins or are singular, like caudal or anal fins. Later in this packet, we will look at the different types of fins that fishes have and some of the unique ways they are used. 2 Placoid Ctenoid Ganoid Cycloid Hard protective scales cover the skin of many fish species. Scales can act as “fingerprints” to help identify some fish species. There are several different scale types found in bony fishes, including cycloid (round), ganoid (rectangular or diamond), and ctenoid (scalloped). Cartilaginous fishes have dermal denticles (Placoid) that resemble tiny teeth on their skin.
    [Show full text]
  • Seafood Watch Seafood Report
    Seafood Watch Seafood Report Sharks and Dogfish With a focus on: Blacktip shark (Carcharhinus limbatus) Common thresher shark (Alopias vulpinus) Dusky smoothhound/smooth dogfish (Mustelus canis) Sandbar shark (Carcharhinus plumbeus) Shortfin mako shark (Isurus oxyrinchus) Spiny dogfish (Squalus acanthias) © Monterey Bay Aquarium Final Report December 21, 2005 Stock Status Update June 9, 2011 Santi Roberts Fisheries Research Analyst Monterey Bay Aquarium SeafoodWatch® Sharks & DogfishReport June 9, 2010 About Seafood Watch® and the Seafood Reports Monterey Bay Aquarium’s Seafood Watch® program evaluates the ecological sustainability of wild-caught and farmed seafood commonly found in the United States marketplace. Seafood Watch® defines sustainable seafood as originating from sources, whether wild-caught or farmed, which can maintain or increase production in the long-term without jeopardizing the structure or function of affected ecosystems. Seafood Watch® makes its science-based recommendations available to the public in the form of regional pocket guides that can be downloaded from the Internet (seafoodwatch.org) or obtained from the Seafood Watch® program by emailing [email protected]. The program’s goals are to raise awareness of important ocean conservation issues and empower seafood consumers and businesses to make choices for healthy oceans. Each sustainability recommendation on the regional pocket guides is supported by a Seafood Report. Each report synthesizes and analyzes the most current ecological, fisheries and ecosystem science on a species, then evaluates this information against the program’s conservation ethic to arrive at a recommendation of “Best Choices,” “Good Alternatives,” or “Avoid.” The detailed evaluation methodology is available upon request. In producing the Seafood Reports, Seafood Watch® seeks out research published in academic, peer-reviewed journals whenever possible.
    [Show full text]
  • Malaysia National Plan of Action for the Conservation and Management of Shark (Plan2)
    MALAYSIA NATIONAL PLAN OF ACTION FOR THE CONSERVATION AND MANAGEMENT OF SHARK (PLAN2) DEPARTMENT OF FISHERIES MINISTRY OF AGRICULTURE AND AGRO-BASED INDUSTRY MALAYSIA 2014 First Printing, 2014 Copyright Department of Fisheries Malaysia, 2014 All Rights Reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic, mechanical, including photocopy, recording, or any information storage and retrieval system, without prior permission in writing from the Department of Fisheries Malaysia. Published in Malaysia by Department of Fisheries Malaysia Ministry of Agriculture and Agro-based Industry Malaysia, Level 1-6, Wisma Tani Lot 4G2, Precinct 4, 62628 Putrajaya Malaysia Telephone No. : 603 88704000 Fax No. : 603 88891233 E-mail : [email protected] Website : http://dof.gov.my Perpustakaan Negara Malaysia Cataloguing-in-Publication Data ISBN 978-983-9819-99-1 This publication should be cited as follows: Department of Fisheries Malaysia, 2014. Malaysia National Plan of Action for the Conservation and Management of Shark (Plan 2), Ministry of Agriculture and Agro- based Industry Malaysia, Putrajaya, Malaysia. 50pp SUMMARY Malaysia has been very supportive of the International Plan of Action for Sharks (IPOA-SHARKS) developed by FAO that is to be implemented voluntarily by countries concerned. This led to the development of Malaysia’s own National Plan of Action for the Conservation and Management of Shark or NPOA-Shark (Plan 1) in 2006. The successful development of Malaysia’s second National Plan of Action for the Conservation and Management of Shark (Plan 2) is a manifestation of her renewed commitment to the continuous improvement of shark conservation and management measures in Malaysia.
    [Show full text]